题目内容
The sympathetic system has also been referred to as the craniosacral system.
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Autonomic pathways, together with somatic pathways to skeletal muscle and neuroendocrine pathways, are the means whereby the central nervous system sends commands to the rest of the body.
Only the preganglionic autonomic neurons of the sympathetic nervous system use acetylcholine (ACh) as their fast excitatory transmitter.
The paravertebral ganglia form the sympathetic chain on each side of the vertebral column.
The response to stress typically involves an increase in parasympathetic activity in selected pathways, such as increased heart rate, skin blanching and perhaps high blood pressure....
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